Define \sphinxliteraltext and \sphinxcodestyle for flexibility

This addresses the \sphinxcode usage issue in context of styling of
declarations, as discussed in parent commit message.

Author: jfbu

sphinx/texinputs/sphinx.sty

@@ -229,6 +229,9 @@
 \@namedef{PYG@tok@k-cpp}{%
      \def\PYG@tc##1{\textcolor[RGB]{0,0,"FF}{##1}}%
 }%
+\@namedef{PYG@tok@d}{% default desc style uses \sphinxcodestyle (i.e. \texttt)
+     \def\PYG@ff##1{\sphinxcodestyle{##1}}%
+}%
 
 %% OPTIONS
 %
@@ -1443,13 +1446,13 @@
 %
 \newlength{\py@argswidth}
 \newcommand{\py@sigparams}[2]{%
-  \parbox[t]{\py@argswidth}{#1\sphinxcode{)}#2}}
+  \parbox[t]{\py@argswidth}{#1\sphinxcodestyle{)}#2}}
 \newcommand{\pysigline}[1]{\item[{#1}]}
 \newcommand{\pysiglinewithargsret}[3]{%
-  \settowidth{\py@argswidth}{#1\sphinxcode{(}}%
+  \settowidth{\py@argswidth}{#1\sphinxcodestyle{(}}%
   \addtolength{\py@argswidth}{-2\py@argswidth}%
   \addtolength{\py@argswidth}{\linewidth}%
-  \item[{#1\sphinxcode{(}\py@sigparams{#2}{#3}}]}
+  \item[{#1\sphinxcodestyle{(}\py@sigparams{#2}{#3}}]}
 \newcommand{\pysigstartmultiline}{%
  \def\pysigstartmultiline{\vskip\smallskipamount\parskip\z@skip\itemsep\z@skip}%
  \edef\pysigstopmultiline
@@ -1551,7 +1554,7 @@
 % breakable at non-escaped . , ; ? ! / using \sphinxbreaksviaactive.
 % the macro must be protected if it ends up used in moving arguments,
 % in 'alltt' \@noligs is done already, and the \scantokens must be avoided.
-\protected\def\sphinxcode#1{{\def\@tempa{alltt}%
+\protected\def\sphinxliteraltext#1{{\def\@tempa{alltt}%
   \ifx\@tempa\@currenvir\else
    \ifspx@opt@inlineliteralwraps
       \sphinxbreaksviaactive\let\sphinxafterbreak\empty
@@ -1562,12 +1565,14 @@
    \let\do@noligs\sphinx@do@noligs
    \@noligs\endlinechar\m@ne\everyeof{}% (<- in case inside \sphinxhref)
    \expandafter\scantokens
-  \fi {\texttt{#1}}}}
+  \fi {#1}}}
 \def\sphinx@do@noligs #1{\catcode`#1\active\begingroup\lccode`\~`#1\relax
     \lowercase{\endgroup\def~{\leavevmode\kern\z@\char`#1 }}}
 \def\sphinx@literal@nolig@list {\do\`\do\<\do\>\do\'\do\-}%
 
-\protected\def\sphinxbfcode#1{\sphinxcode{\bfseries{}#1}}
+\protected\def\sphinxcodestyle#1{\texttt{#1}}
+\protected\def\sphinxcode#1{\sphinxcodestyle{\sphinxliteraltext{#1}}}
+\protected\def\sphinxbfcode#1{\textbf{\sphinxcode{#1}}}
 \protected\def\sphinxemail#1{\textsf{#1}}
 \protected\def\sphinxtablecontinued#1{\textsf{#1}}
 \protected\def\sphinxtitleref#1{\emph{#1}}

sphinx/writers/latex.py

@@ -1216,7 +1216,7 @@ def depart_desc_signature_line(self, node):
 
     def visit_desc_element(self, node):
         # type: (nodes.Node) -> None
-        self.body.append('\\PYG{%s}{\\sphinxcode{' % '+'.join(node['classes']))
+        self.body.append('\\PYG{%s}{\\sphinxliteraltext{' % '+'.join(node['classes']))
         self.literal_whitespace += 1
 
     def depart_desc_element(self, node):